Method for communication between user terminal and network, and terminal, network device and apparatus

The present application is a US National Stage of International Application No. PCT/CN2021/094696, filed on May 19, 2021, which claims the priority from Chinese Patent Application No. 202010777659.3, filed with the China National Intellectual Property Administration (CNIPA) on Aug. 5, 2020 and entitled “Method for Communication between User Terminal and Network, Terminal, Network Device and Apparatus”, the entire contents of which are hereby incorporated by reference.

The disclosure relates to the field of wireless communication technologies, and in particular, to a method for communication between a user terminal and a network, a terminal, a network device and an apparatus.

In the 3GPP (Third Generation Partnership Project) R17 (Release 17), research and standardization have been carried out on the ProSe (Proximity Services) in the 5G system. An important scenario in the ProSe is: a Remote UE (remote user terminal) communicates with the network through a Relay UE (relay user terminal) to obtain related services. The 5G core network determines the QoS (Quality of Service) of the Relay UE only according to service characteristics. However, how to manage the QoS of the Relay UE to provide the end-to-end (Remote UE and Remote UE UPF) QoS for the Remote UE and the Remote UE can achieve the purpose of communicating with the network is still an unsolved problem in the 5G system standard.

The disclosure provides a method for communication between a user terminal and a network, a terminal, a network device and an apparatus, to determine, through the relay UE, the communication delay between the remote UE and the relay UE and determine the communication delay between the relay UE and the network device, and the relay UE can provide the end-to-end quality of service for the remote UE more accurately, and thus the remote UE can achieve the purpose of communicating with the network.

In some embodiments of the disclosure provide a method for communication between a user terminal and a network, including:

In the method provided by the embodiments of the disclosure, the communication delay of the PC5 interface and the communication delay of the Uu interface are determined by the relay UE, rather than determined by the network device according to the service requirements, so the network can provide the relay UE with the more accurate quality of service to an extent, and the relay UE can also provide the remote user with the more accurate quality of service.

In some embodiments, the determining, by the relay UE, the PC5 PDB and the Uu PDB, includes:

In the method provided in the embodiments, the relay UE can determine the communication delay of the PC5 interface and the communication delay of the Uu interface through different means, and each means can determine the communication delays of the two interfaces more accurately than the prior art. If the communication delays are determined according to the resource configuration information, the communication delays of the PC5 interface and the Uu interface can be accurately allocated according to the sizes of the resources configured for the PC5 interface and the Uu interface. If the communication delays are determined according to the policy information, the policy information in the embodiments, compared with the service requirement, considers factors including but not limited to service requirement, interface configuration resource, subscription information and operator policy, so the communication delays of the interfaces can still be accurately determined. If the communication delay of the PC5 interface is determined according to the Uu PDB sent by the SMF, the Uu PDB sent by the SMF is accurate, so the PC5 PDB determined based on the Uu PDB is also accurate.

In some embodiments, the method further includes:

Although the relay UE in the embodiments determines the Uu PDB, the relay UE may not directly use the Uu PDB to communicate with the core network but send the Uu PDB to the SMF, and the SMF determines whether to change the Uu PDB, and the Uu PDB determined by the relay UE in the embodiments can be changed according to the subscription information and/or the operator policy, the Uu PDB received finally by the relay UE is more in line with the current actual requirements, and the relay UE uses the received Uu PDB to communicate with the network.

In some embodiments, the method further includes:

The relay UE in the embodiments of the disclosure may further send the PQI to the remote UE and determine the 5QI, and the remote UE uses the PQI and the PC5 PDB to communicate with the relay UE, and the relay UE uses the 5QI and the Uu PDB to communicate with the network.

In some embodiments, the determining, by the relay UE, the PC5 PDB and the Uu PDB according to the resource configuration information of the PC5 interface and the Uu interface, includes:

In the embodiments, the communication delay of the interface can be determined according to the size of the resource configuration information of the interface. The communication delay of the interface with the smaller resource configuration is greater than the communication delay of the interface with the larger resource configuration. The communication delay determined in this configuration manner is more accurate, and the end-to-end quality of service requirement of the remote UE can be met better.

In some embodiments, the determining, by the relay UE, the PC5 PDB and the Uu PDB according to the policy information sent by the PCF, includes:

In the embodiments, the relay UE determines the PC5 PDB and the 5QI according to the policy information of the PCF (including the mapping relationship between PQI and PC5 PDB), and further determines the Uu PDB. Since the mapping relationship between PQI and PC5 PDB is pre-determined, the communication delay is determined according to the relationship between the quality of service parameter and the communication delay, which better meets the quality of service requirement of the remote UE to an extent, and further better meets the quality of service requirement of the relay UE.

In some embodiments, the receiving, by the relay UE, the Uu PDB sent by the SMF, and determining the PC5 PDB according to the Uu PDB, includes:

In the embodiments of the disclosure, since the Uu PDB sent by the SMF is determined based on the PC5 PDB provided by the remote UE while the PC5 PDB provided by the remote UE is determined based on the resource configuration information of the PC5 interface, the communication delay from the remote UE to the relay UE can be accurately determined, and it is further explained that the communication delay from the relay UE to the core network can be accurately determined, and the end-to-end requirement of the remote UE can be better met ultimately.

In some embodiments of the disclosure provide a method for communication between a user terminal and a network, including:

In some embodiments:

In some embodiments, the communicating, by the remote UE, with the relay UE using the PC5 PDB, includes:

In some embodiments, the method further includes:

In some embodiments of the disclosure provide a method for communication between a user terminal and a network, including:

In some embodiments, the determining, by the SMF, the Uu PDB to be sent to the relay UE according to the received communication delay Uu PDB of the Uu interface, includes: determining, by the SMF, the Uu PDB to be sent to the relay UE according to subscription information and/or an operator policy based on the received Uu PDB sent by the relay UE; or

In some embodiments, the sending, by the SMF, the determined Uu PDB to be sent to the relay UE to the relay UE, includes:

In some embodiments of the disclosure further provide a relay terminal, including a memory, a transceiver and a processor:

In some embodiments, the processor is configured to:

In some embodiments, the processor is further configured to:

In some embodiments, the processor is further configured to:

In some embodiments, the processor is configured to:

In some embodiments, the processor is configured to:

In some embodiments, the processor is configured to:

In some embodiments of the disclosure further provide a remote terminal, including a memory, a transceiver and a processor:

In some embodiments:

In some embodiments, the processor is configured to:

In some embodiments, the processor is further configured to:

In some embodiments of the disclosure further provide a network device, including a memory, a transceiver and a processor:

In some embodiments, the processor is configured to:

In some embodiments, the processor is further configured to:

In some embodiments of the disclosure further provide a first apparatus for communication between a user terminal and a network, including: a determining device, a sending device and a communication device, and:

In some embodiments, the determining device is configured to:

In some embodiments, the apparatus further includes a first sending device configured to:

In some embodiments, the apparatus further includes a second sending device configured to:

In some embodiments, the determining device is configured to:

In some embodiments, the determining device is configured to:

In some embodiments, the determining device is configured to:

In some embodiments of the disclosure further provide a second apparatus for communication between a user terminal and a network, including: a receiving device and a communication device, and:

As an optional embodiment:

In some embodiments, the apparatus further includes a first receiving device configured to:

The communication device is configured to: